Unit One

Part I The Creation of the Automotive World
Part II How the Automobile Shaped America:The 'Burbs
Part Ill America's Romance with the Car
Part IV The Benefits and Drawbacks of Electric Cars
Part V The Automobile Shapes the City

Unit Two

Part I Climate Change -What You Can Do
Part Il The History and Development of Suburbs
Part Ill Millennials Are Happiest in Cities
Part IV The Advantages of Suburban and City Life
Part V Time to Leave the Big City for the Little City

Unit Three

Part I Black Holes
Part Il Carl Sagan and the Cosmos Legacy
Part Ill The Hubble Space Telescope
Part IV The Advantages and Disadvantages of Space Exploration
Part V China's Chang'e Program:Missions to the Moon

Unit Four

Part I The Economics of Product Design
Part Il The Modern Workplace:Flat, Flexible and Wired Up
Part Ill What Does an Industrial Designer Do？
Part IV The Pros and Cons of Working an Office Job
Part V ing Happy

Unit Five

Part I Lindas New Friend
Part II The Meaning of Friendship in a Social Networked World
Part Ill What Are the Advantages of Digital Communication？
Part IV The Pros and Cons of Making Friends at the Offce
Part V Friendship in the Age of Social Media

Unit Six

Part I Lawyers and Professors and Cars and Clothing
Part II A Decidedly Mixed Bag
Part Ill Long Live the Mom and Pop:Why Small Businesses Have a Magic Touch
Part IV The Advantages and Disadvantages of Small-Business Ownership
Part V A Visit to the Hema Store in Beijing

Appendix Key to Comprehension Exercises